Both physical and dynamic properties of the atmosphere play important roles in determining the levels of air contaminants. In Auckland, and New Zealand generally, investigations of the impacts of weather and climatic conditions on air quality are still few in number and limited in scope. This makes it difficult to assess the potential adverse effects of air discharges and consequently limits the development of effective air quality management strategies due to the high degree of scientific uncertainties. The aim of this book is therefore to provide an integrated approach to air quality problems in Auckland through analyses of three inter-related themes: local meteorology-air quality relationship, land use-air quality relationship, and the relationship between synoptic weather types, local meteorology and air quality. The integration of analyses facilitates a holistic understanding of the impacts of weather conditions, both local dispersion and synoptic control, on local air quality. It is hoped that the results and methods of this case study can be exposed to and thus helpful for the greater air quality community in the New Zealand and wider contexts.